基于太阳能CPC聚光干燥技术的印染污泥干化样机设计及实验

发布时间：2018-04-04 20:43

  本文选题：印染污泥　切入点：太阳能　出处：《浙江工业大学》2014年硕士论文

【摘要】：纺织印染业是浙江传统优势产业,但污染排放较大。对于印染污泥的处理处置问题,还没有针对性解决方法,主要是借鉴城市污泥的处理方法,无法实现资源化。在能源日益短缺、环境污染越来越严重的今天,清洁、环保、经济地干化印染污泥是发展趋势。本文就浙北地区印染企业的发展形势,提出以印染污泥“就地混烧”的资源化利用为目的处理路线,通过对太阳能干燥技术和污泥低温干燥技术、热泵干燥技术的研究,首次提出了热泵辅助式太阳能聚光干燥的设计思路；结合CPC聚光集热技术、真空集热管结构以及转筒干燥的优势,设计并制作了转筒式CPC聚光干燥器样机,进行了实验研究和生产模拟测试。主要的成果如下：(1)设计并搭建了热泵辅助式太阳能污泥干燥实验台。实验测试分析了干燥管内空气和内壁在一天内的温度变化趋势,验证了干燥管的温度已达到实际干燥需要,可实现的温度范围在60℃-110℃。在无热风情况下,一天内维持在60℃以上的干燥时间在6个小时。在热风介入下,可保证在光照不足时的干燥温度,实现全天候正常工作。(2)进行了印染污泥干燥实验,记入在不同的温度(60℃、80℃、90℃)、不同的颗粒大小(6mm、8mm、10mm)的三种干燥模式下所需要的干燥时间。分析了干燥管内横向温差对于物料干燥的影响。同时与传统热风干燥器相比,干燥转筒的设计有利于保持物料的原始形状,太阳能聚光集热管的设计可降低了干燥筒沿物料前进方向上的温差。(3)本文制作的转筒式CPC聚光集热干燥管的集热效率可在40%左右。通过实验和计算得出试验样机可实现的印染污泥日处理量在10.678kg/(d·m2)左右。理论上推算,300m2的接受面积可实现每天3.2吨的处理量,基本达到了浙北地区中小型印染企业的处理需要。同时相比于单独用电加热送风干燥,太阳能热风联合加热干燥的耗电量降低了40.63%,单独太阳能加热干燥耗电量降低了73.3%。(4)从实验数据中分析计算,得出在提供热风80℃时三种干燥模式下印染污泥的能耗分别为0.551KW·h/kg,0.181KW·h/kg,0.928KW·h/kg。参考目前浙江工业用电平均成本1元／度,得出三种模式下的污泥的处理成本551元／吨、181元／吨、928元／吨。
[Abstract]:Textile printing and dyeing industry is Zhejiang traditional advantage industry, but the pollution emission is bigger.As for the treatment and disposal of printing and dyeing sludge, there is no specific solution, which mainly refers to the treatment method of urban sludge and can not be used as a resource.Nowadays, with the shortage of energy and environmental pollution, clean, environmental protection and economical drying of printing and dyeing sludge are the development trend.According to the development situation of printing and dyeing enterprises in the north of Zhejiang province, this paper puts forward a new way to deal with the resource utilization of printing and dyeing sludge "in situ", through the research of solar energy drying technology, sludge low temperature drying technology and heat pump drying technology.The design idea of heat pump assisted solar condensing drying is put forward for the first time, and the prototype of rotary cylinder CPC condenser is designed and manufactured by combining the CPC collector technology, the structure of vacuum collector and the advantages of rotary cylinder drying.Experimental research and production simulation test were carried out.The main results are as follows: (1) the heat pump assisted solar sludge drying experiment bench is designed and built.The temperature variation trend of air and inner wall in a single day has been tested and analyzed. It is verified that the temperature of drying pipe has reached the actual drying requirement, and the achievable temperature range is from 60 鈩，

本文编号：1711609